Three tech services stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

WidePoint Corporation (WYY) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. WidePoint provides technology solutions and services to the government sector and commercial markets in the United States. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. For more information, get Portfolio Grader’s complete analysis of WYY stock.

Total System Services, Inc. (TSS) improves from a C to a B rating this week. Total System Services provides electronic payment processing, merchant services and related services to financial and non-financial institutions worldwide. Shares of the stock have been changing hands at an unusually rapid pace, three times the rate of the week prior. For more information, get Portfolio Grader’s complete analysis of TSS stock.

Unisys Corporation (UIS) shows solid improvement this week. The company’s rating rises from a C to a B. Unisys is an information technology company that provides outsourcing services, systems integration, consulting services and infrastructure services for its customers. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. For more information, get Portfolio Grader’s complete analysis of UIS stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.